Timer



Mai. 27, 1923. 1,449,740.

- l. P. FIELD.

' TIMER.

FILED MAR. I3. 1919.

Patented Mar. 27, 1923.

- UNITEDSTATEVST PATENT mice JAMES P. FIELD, OF DETROIT, MICHIGAN.

TIMER.

Application filed March 13, 1919. Serial No. 282,369."

- tain new and useful Improvements in Timers, of which the following is a specification, reference-being had therein to the accompanying drawings.

This invention aims to provide a timer for the ignition system of an automobile,

and in constructing the timer 1 have made it applicable to theusual cam shaft and gear case end plate of the power plant of a well known automobile, to obviate the necessity of makingalterations or additions to the gear case end plate.

My invention. further aims to provide novel means, in a manner as hereinafter set forth for supporting a timer in a horizontal position some distance above the usual gear case end plate, so that easy access may be had to thetimer for repair and cleaning and also to facilitate adjustment. The location of my timer is such that connections may be easily established therewith for advancing or retarding the sparks of the ignition system, and provision is made for a thorough lubrication of the movable connections between the timer and the cam shaft of the automobile engine.

My invention possesses other advantages 1 that will be apparent as the. invention is better understood, and reference will now be had to the drawing, whereins .Figure 1 is an end view of the gear case plate provided with a timer in accordance with my invention, the timer per se being partly broken away;

Fig. 2 is a vertical, longitudinal sectional view of the same and Fig. 3 is a plan of the timer. 1

In the drawing, the reference numeral 1 denotes a conventional form of gear case end plate, said plate having the usual openings 2 for screw or nut bolts 8 and the usual opening 4L which provi les clearance for theend of a cam shaft 5. The outer face of the plate 1., about the opening 4, has an annular flange 6, which has heretofore provided a seat or positioning means for a timer articulated to the endofthe cam shaft 5, but in my construction, the flange 6 assists in supporting a casing or elbow member 7 against the plate 1 and in communication with the opening 1. The casing or elbow member 7 has radially disposed arms 8 and if these arms are adapted to be held by the screw or nut bolts 3, as shown in Fig. 1, thus permitting of the casing or elbow member 7 being held by the usual fastening means of the gear case endplate.

Extending upwardly from the casing or elbow member 7 is an upright bearing 9 and journaled in said bearing is a timer shaft 10, which has the lower end thereof provided with a horizontally disposed beveled gear wheel 11 meshing with a beveled gear wheel 12 on the forward end of the cam shaft 5. The beveled gear wheels 11 and 12 are in closed by the casing or elbow member 7 and lubricant can be supplied to said beveled gear wheels by-a cup13 carried by the casing 7 or. by lubricant splashed or injected through the opening 4:. That portion of the timer shaft 10 within the upright bearing 9 may be supplied with oil from the lubricant cup 1 1. I p p a The upper end of timer shaft 10 is enlarged or provided with a spindle 15 having an annular groove 16 and extending tangentially of the spindle 15, in the groove 16, is a pin 17 carried by the hub portion 18 of a timer base 19. The hub portion 18 of the relative to the bearing 9, this being accomplished by providing the usual crank portion 22 of the casing 2.1 with a depending end 23 that extends into an apertured boss 24: of the timer, said boss also having the usual apertured lug 25, so that connections may be established with the timer for adjusting the same from the dash of an automobile. It is therefore apparent that the timer is bodily revoluble in a horizontal plane on the upper end of the bearing 9, and by interposing said bearing and the casing 7 between the end of the cam shaft 5 and the timer per 'se, I am able to place the timer in a more accessible position free from the lodgment of dirt and lubricant which might work into the interior of the timer, and also better protected from the elements. This is all accomplished without any material modi fications in connection with the timer or the usual gear case end plate.

To lubricate the spindle 15 of the timer shaft 10, the hub 18 of the timer may be provided with a lubricant cup 26.

One embodiment of my invention has been illustrated, but it is to be understood that the structural elements are susceptible to such variations and modifications as fall within the scope of the appended claims.

\Vhat I claim is l. The combination with a gear case end plate, a casing connected thereto, and a shaft journaled in said casing and driven from within the lower end of said casing, of a timer, a spindle on the upper end of said shaft axially of said timer and constituting one of the operatable elements of said timer, a timer base supporting said timer relative to said spindle. said timer base having a hub portion bearing on the upper end of said casing, and means carried by the hub portion of said timer base and engaging in the wall of the spindle of said shaft for adjust ably retaining said timer base on the upper end of said casing.

2. A timer construction as in claim 1, wherein said spindle is of greater diameter than said shaft to afford an annular shoulder bearing on the upper end of said casing to support said spindle and shaft relative to said casing and independent of the connection between said spindle and the hub portion of said timer base so that said timer base may be freely adjusted relative to said casing.

In testimony whereof I afiix my signature in the presence of two witnesses.

JAMES P. F] ELI).

Witnesses:

KARL H. BUTLER, LEWIS l). Fmzi'xnaas. 

